Grip-tread for vehicle-tires.



- c. J. OHLSSON. GRIP TBEAD FOR VEHICLE TIRES. APPLIGATION FILED SEPT.21, 1910.

Patented 1090.9, M13.

WITNESSES: 7 INVENTOR Q (PH/461.55 J. OHLSSO/V MM Gm wad VM' L ATTORNEYrairnnr enrich,

CHARLES Jl'l. GHLSSON, 0E NEXV YORK, N. Y.

GEEP-TREAD R VEHICLE-TIRES.

specification of Letters Patent.

Patented DeoQ, 95313,

To all whom it may concern:

Be it known that I, Cnsnnns J, Dnnsson, of the city of New York, boroughof Brooklyn, Kin gs ccunty,'in the State of New York, have inventedcertain new and usetul 1m proveincnts in Grip-Treads tor and exactspecification.

My invention relates to improvements in means for increasing thetractivc properties of vehicle wheels, and. the same has for its objectmore particularly to provide a grip tread which may be easily applied toor removedfrom a vehicle wheel.

Further, said invention has for its object to provide a grip tread,provided with means for protecting the tread against injury by thegripping member of the device. y

, Further, said invention has for its object to provide a grip treadcomprising a series of ,grippingmembers which may be readily removed ordisconnected from the attaching members when it 1s desired to replaceone which has become broken or worn out in consequence of use.

said invention has for its object to provide a grip tread with means forse curing the gripping member and the protecting member therefor jointlytogether and to the attaching members in such away that the grippingmembers will not become accidentally detached from tie means forsecuring the same to the attaching members.

lo-theattainment oi the aforesaid objects and ends my invention consistsin the details of construction and in the combination, connection andarrangement of parts hereinafter more fully described, and then pointedout in the claims.

lathe accompanying part of this specification, wherein like numerals ofreference indicate like parts, Figure 1 is a side view showing a portionof a. vehicle Wheel and tire with a grip tread, constructed according toand embodying my said inventiomapplied thereto; Fig. 2 is an enlargedface view showing portions of the side chains, and one of the grippingmemhers with its protecting means secured thereto, and Fig.3 is anenlarged detail side view showing one end of the gripping member, theprotecting member, and the means for securing the same together. 1

In said drawings 5 designates a vehicle wheel of usual construction, 6the rim there- Further,

drawings forming Vehicle- Tires, oi? which the following is a full,clear,

portion of the tire novel of, and 7 a neumatic the secured upon theouter side or the run.

The gripping tread comprises a pair of.

parallel attaching members or side chains k, 8 which are provided attheir ends with suitable means for securing the same together. The saidchains 8, S are of such length that when arranged in position upon thewheel, and their respective ends, secured together, they will formcircular members of smaller diameter than the outer diameter of thetire. Between the said chains 8, S are arranged, at suitable intervals,a plurality of gripping members or short chains .9, 9 which are securedat the opposite ends to said side chains by means of books 10, 10. Theouter ends of said hooks are rovided with eyes 11, 11 which are securetto the side chains 8, 8, and the inner or hook ends of said hooksengaged with the opposite ends of the gripping members or short chains9, 9.

12, 12 denote protecting sections having slightly curved longitudinalsides and providcd at their ends with coupling devices formed of aplurality of lugs 13, 13 comprising a vertical member 1a having anaperture therein and a horizontal member 15 secured upon the outersurface of the pro tccting section 12 by means of a rivet 15. The lugs13, 13 are adapted to receive the ends of the hooks 10, and maintain theopposite cnds of the short chains 9, 9 in position thereon intermediatethe vertical portions 14., I l of the lugs 13, 13. Each hook 10 isprovided withta keeper in the :t'ornrof a fiat plate 16 which isslidably disposed upon the body portion. l7 of the hook 10, and has itsfree end provided with an aperture adapted to receive the end of thehook 10.

18 denotes a stop provided upon the hook 10 below the plate 16 in orderto limit the movement of said plate, and 19 denotes a spring disposednoon the hook l0 intermediate the eye 11 thereof and the outer surfaceof the plate 16, whereby to hold said plate normally in position uponand engagins the free end of the hook 10.

It will he noted that when the grip tread is secured in position upon aWheel the said chains 8, 8 serve to maintain the transverse chains 9, 9,and their protecting sections 12, Blunder tension upon the tire, and atthe same time the free ends of the hook members ,10, 10 are preventedfrom opening under the tension of the chains 9, 9 by means of thekeepers 16 which serve to prevent the free ends of the hooks being drawnapart, and thereby release the opposite ends of the short 'chains 9, 9.Further, it will be noted that chains 9, 9 are maintained Within thevertical portions 14:, 14 of the lugs 13, 13 secured at the oppositeends of the protecting sections 12, 12, and thus serve effectually tokeep the parts in proper position upon the tire.

In order to replace a short chain 9, which may become broken or Worn outin consequence of use, it merely becomes necessary to first release thefree end of the keeper or plate 16 by turning the same outwardly againstthe tension of the spring 19, and then pushing the hook member in untilthe free end of the hook. member becomes disengaged from 'the lug 13,through which it extends. The hook 10 is then given a partial turnwhereupon the end of the short chain 9 may be removed therefrom and anew one inserted, and the parts again secured together, as hereinabovedescribed.

In this application I do not claim the construction of the hook member10, as the same forms the subject-matter of a separate application filedby me on December 22,

1910, Serial Number 578,774. p Having thus described my invention, whatI claim and desire to secure by'Letters -Patent, is: I 1. A grip'treadfor vehicle tires comprising a pair of annular attaching members,

a plurality of transverse gripping members intermediate the same,.flexible protecting members for said gripping members, lugs arranged atthe opposite ends of said protecting members, hook members perma nentlysecured to said attaching members and detachably engaging said lugs andthe ends of said gripping members, and means for closing the opening ofsaid hook members, substantially as specified.

2. A grip tread for vehicles comprising a pair of annular attachingmembers, a plurality of transverse gripping members intermediate thesame, flexible protecting members for said gripping members, apair ofangle plates having apertures therein, and secured to the opposite endsof said protect-ing members, and hook members secured their'outer endstosaid annular attaching members, and having their inner ends engaging theapertures in said angle plates and the ends of said gripping members,and: means for closing the opening. of saidhook members. substantiallyas specified.

Signed at the city of New-York, in the county and State of New York, thefifteenth day of September, one thousand nine hundredand ten.

. C AR ES J. OHLSSON.

. l'Vitnesses:

CONRAD A. DIETERICH, Josnrrr G. QUINN, Jr,

Copies of this patent may be obtained for five cents each, byaddresslng' the Gommissioner of I'atents,

Washington, D. G.

'tecting members, hook members secured at

